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航 天 导航 : 155 phrases in 13 subjects |
| Agriculture | 1 |
| Air defense | 4 |
| Aviation | 18 |
| Biophysics | 1 |
| Construction | 1 |
| Electronics | 21 |
| General | 5 |
| Oil / petroleum | 1 |
| Shipbuilding | 1 |
| Space | 66 |
| Technology | 29 |
| Transport | 1 |
| United States | 6 |
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